/**
 *  Copyright (C) 2008-2013  Telosys project org. ( http://www.telosys.org/ )
 *
 *  Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *          http://www.gnu.org/licenses/lgpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.telosys.common.config;

import java.io.InputStream;


/**
 * Configuration loader interface 
 * 
 * @author Laurent Guerin
 * @since 1.2.0
 *
 */
public interface ConfigLoader {

	/**
	 * Loads the Telosys configuration 
	 * @return configuration instance
	 * @throws Exception
	 */
	TelosysConfig loadTelosysProperties() throws Exception ;
	
	/**
	 * Returns the InputStream of a resource
	 * @param sResource
	 * @return the InputStream of the given resource
	 * @throws Exception
	 */
	InputStream getInputStream ( String sResource ) throws Exception ;
	
	/**
	 * Information about configuration origin
	 * @return the origin of the configuration ( "Class Path", "File System", etc... )
	 */
	String getOrigin() ;
	
}
